Key developments on June 8:
* Russia rejects Ukrainian, European peace initiatives, says battlefield will decide war
* NATO jets shoot down drone over Latvia in 1st such interception, military says
* Ukraine strikes Russian oil depot, radar station, other military targets, General Staff confirms
* Ukraine foils Russian plot to assassinate senior military intelligence official, police say
* At least 8 killed, 52 injured in Russian attacks across Ukraine over past day
Ukrainian forces recap